JDaddy,
Thanks for this thread as I have the same PRR caboose but never realized that it could be activated by means other than an Operating track section.
Using my Legacy remote it appears to take a 2 sec. press of the bell button (addressing the track) to start the action but an additional hold of 2 more sec. to lock the sequence into forward.
I wish MTH would have built the same actuation feature into the operating boxcar.